Re: Kernel 2.6.6 does not recognise /dev/md0 automatically

[Clement <clement@ans.com.au>]

Xavier Bestel wrote:

> Lew:
>  
>
> > Herbert Xu the package maintainer for initrd-tools is the authority on
> > this, I'd best not spoil his hard work with too many inaccurate rubbish
> > statements.  
> >
> > Perhaps someone in the linux-raid mail group can shed some light on this
> > and as to which kernel modules are required?
> >    
>
> I just finished my Sarge+RAID installation (not that easy, really).
> And effectively the 2.6.6 kernel doesn't recognize automatically the
> RAID setup, whereas the 2.4 does. And mkrun doesn't detect anything.
> The solution I found was simply to generate a /etc/mdadm/mdadm.conf
> (with mdadm -E -s help) then put AUTOSTART=false in
> /etc/mdadm/debian.conf to have mdadm discover the RAId instead of mdrun.
> Now it works quite well.
>  
This does not work on my test machine.  I tried your way and get:

mdadm: /dev/hda2 has wrong uuid
mdadm: /dev/hdc2 has wrong uuid
mdadm: no devices found for /devfs/md/1
...
kernel panic:  Attempted to kill init

/dev/hda2 & /dev/hdc2 together makeup /dev/md1 which is the root 
partitioin. 

My solution is to compile a 2.6.6 kernel with built-in support for IDE 
and chip set used in the motherboard.  Certainly, it is always better if 
the std kernel cannot be used.

Regards,
Clement